#183A89#183A89

#183A89 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.138 H 263.6°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#183A89
RGB	rgb(24, 58, 137)
HSL	hsl(222, 70%, 32%)
HSV	hsv(222, 82%, 54%)
CMYK	cmyk(82.5%, 57.7%, 0%, 46.3%)
CIE-LAB	lab(26.81, 18.94, -47.50)
CIE-LCH	lch(26.81, 51.13, 291.74°)
OKLab	oklab(37.58% -0.0155 -0.1371)
OKLCH	oklch(37.58% 0.138 263.6)
XYZ	xyz(6.4035, 5.0257, 24.2946)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A89 #896718

analogous

#187389 #183A89 #2F1889

triadic

#183A89 #89183A #3A8918

tetradic

#183A89 #891873 #896718 #18892F

square

#183A89 #891873 #896718 #18892F

split-complementary

#183A89 #892F18 #738918

monochromatic

#060E21 #0F2455 #183A89 #2150BD #3E6EDD

Accessibility & contrast

On white

10.47

#183A89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#183A89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A89

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A89	#FFFFFF	#000000	##FFFFFF
##183A89	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458C

Deuteranopia (green-blind)

#003A87

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #183a89;
/* rgb */ color: rgb(24, 58, 137);
/* oklch */ color: oklch(37.6% 0.138 263.6);

Tailwind

colors: {
  custom: {
    50: '#696fac',
    500: '#183a89',
    950: '#000000',
  },
}

SCSS

$custom: #183a89;
$custom-light: #696fac;
$custom-dark: #000000;

JSON

{
  "hex": "#183a89",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 137
  },
  "hsl": {
    "h": 221.947,
    "s": 70.186,
    "l": 31.569
  },
  "oklch": {
    "l": 0.37581,
    "c": 0.13801,
    "h": 263.6
  },
  "luminance": 0.05026
}

Semantic roles & 50–950 ramp

primary

#183A89

secondary

#BD9740

accent

#B73BED

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #183A89

Body copy rendered with the generated semantic roles for this colour.

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